<template>
	<view class="w-100">
		<view class="bg-f1 h-100vh">
			<view>
				<cu-custom bgColor="bg-gradual-pink" :isBack="true">
					<block slot="backText">返回</block>
					<block slot="content">工位列表</block>
				</cu-custom>
			
			
			</view>
			<!-- <view class="pt-f left-0 w-100 p-0-32 bg-white z1000" :style="'height: 132rpx;top:0'">
				<view>
					<view class="fz-34 fw-b pt-20">
						三体2：黑暗森林
					</view>
					<view class="mt-10 fz-28 color-666">
						2021年1月22日 国语3D
					</view>
				</view>
			</view> -->
			<movable-area :style="'height:'+(seatRow*40+350)+'rpx;width: 100vw;top:'+(rpxNum*132)+'px'" class="pt-f left-0">
				<movable-view :style="'width: 100vw;height:'+(seatRow*40+350)+'rpx;'" :inertia="true" :scale="true" :scale-min="0.95"
				 :scale-max="2" direction="all" @change="onMove" @scale="onScale">
					<view class="Stage dp-f jc-c ai-c fz-22 color-333">
						
					</view>
					<view style="width: 100rpx;height: 30rpx;" class="m-0-a mt-48 dp-f jc-c ai-c fz-20 color-999  "><!-- 银幕中央 --></view>
					<view class="pt-f pa-v-2 b-d-1" :style="'height:'+seatRow*(20+seatSize*pxNum)+'rpx;top:165rpx;width:0'"></view>
					<view v-for="(item,index) in seatArray" :key="index" class="dp-f jc-c mt-20" :style="'width:'+boxWidth+'px;height:'+seatSize+'px'">
						<view v-for="(seat,col) in item" :key="col" class="dp-ib" :style="'width:'+seatSize+'px;height:'+seatSize+'px'"
						 @click="handleChooseSeat(index,col)">
						 <!-- 可选 -->
							<image v-if="seat.syhSitStatus===0" class="w-100 h-100" src="../../static/unselected.png" mode="aspectFit"></image>
							<!-- 已选 -->
							<image v-else-if="seat.syhSitStatus===1" class="w-100 h-100" src="../../static/selected.png" mode="aspectFit"></image>
							<!-- 不可选 -->
							<image v-else-if="seat.syhSitStatus===2" class="w-100 h-100" src="../../static/bought.png" mode="aspectFit"></image>
						</view>
					</view>
					<view class="pt-f bg-line br-15 over-h" :style="'left: '+(10-moveX/scale)+'px;top:109rpx;width:30rpx;'">
						<view class="w-100 dp-f ai-c jc-c fz-22 color-fff" :style="'height:'+seatSize+'px;margin-top:20rpx;'" v-for="(m,mindex) in mArr"
						 :key="mindex">{{m}}</view>
						<view :style="'height: 20rpx;'"></view>
					</view>

				</movable-view>
			</movable-area>
			<view class="pt-f bottom-bar left-0 dp-f fd-cr z1000">
				<view class="bg-white p-all-32">
					<!-- <view class="dp-f ai-c jc-c fz-28 color-333 mb-20" v-if="SelectNum===0">
						推荐选座
						<view style="width: 106rpx;height: 60rpx;" class="b-1 br-5 dp-f ai-c jc-c fz-28 ml-20" v-for="(n,numindex) in 4"
						 :key="n" @click="smartChoose(numindex+1)">
							{{numindex+1}}人
						</view>
					</view> -->
					<view class="dp-f ai-c fw-w fz-28 color-333 mb-20" v-if="SelectNum>0">
						<text>已选</text>
						<view class="p-all-10 b-1 br-5 dp-f ai-c jc-c fz-28 ml-20" v-for="(optItem,optindex) in optArr" :key="optindex">
							{{optItem.rowNum+'排'+optItem.columnNum+'座'}}
						</view>
					</view>
					<mx-date-picker :show="showPicker" :type="type" :value="value" :show-tips="true" :begin-text="'入住'" :end-text="'离店'" :show-seconds="true" @confirm="onSelected" @cancel="onSelected" />
					<view style="width: 686rpx;height: 90rpx;" class="dp-f jc-c ai-c br-10 fz-34 color-fff" :class="SelectNum>0?'bg-red-1':'bg-unbtn'"
					 @click="onShowDatePicker('time')">
						<!-- {{SelectNum>0?('￥ '+aPrice+' 确认座位'):'请选座位'}} -->
						{{SelectNum>0?(' 确认座位'):'请选座位'}}
					</view>
				</view>
				<view class="dp-f jc-c ai-c mb-20 fz-28" v-if="showTis">
					<view class="dp-f jc-c ai-c m-0-10">
						<image :style="'width:'+seatSize+'px;height:'+seatSize+'px'" src="/static/unselected.png" mode="aspectFit"></image><span
						 class="ml-10">可选</span>
					</view>
					<view class="dp-f jc-c ai-c m-0-10">
						<image :style="'width:'+seatSize+'px;height:'+seatSize+'px'" src="/static/bought.png" mode="aspectFit"></image><span
						 class="ml-10">不可选</span>
					</view>
					<view class="dp-f jc-c ai-c m-0-10">
						<image :style="'width:'+seatSize+'px;height:'+seatSize+'px'" src="/static/selected.png" mode="aspectFit"></image><span
						 class="ml-10">选中</span>
					</view>
				</view>
			</view>
		</view>
	</view>
</template>
<script>
	/*
	 *特别声明：
	 * 该页面的逻辑及思路来自作者[houzisbw](https://github.com/houzisbw)的vue选座项目github地址[点击](https://github.com/houzisbw/MeiTuanCinemaSmartChoose)。
	 * 本人只针对uni-app做了样式及逻辑适配。
	 * 感谢原作者[houzisbw](https://github.com/houzisbw), 如有侵权, 请举报
	 * 
	 */
	 
	// import {seatData} from '@/common/util/seat-data.js'
	import MxDatePicker from "@/components/mx-datepicker/mx-datepicker.vue";
	export default {
		components: {
		    MxDatePicker
		},
		data() {
			return {
				time:'',
				endTime:'',	//预订结束时间
				syhUserId:'',	//用户id
				seatData:[],	//获取到的座位数据
				syhClassroomId:'',	//教室编号
				Reserve:{
					syhUserId:'',
					syhClassroomId:'',
					syhReserveEndTime:'',
					syhSitIds:[],
				},
				showPicker: false,
				type: 'rangetime',
				value: '',
				scaleMin:1,//h5端为解决1无法缩小问题，设为0.95
				boxWidth: 400, //屏幕宽度px
				space: ' ', //空格
				seatArray: [], //影院座位的二维数组,-1为非座位，0为未购座位，1为已选座位(绿色),2为已购座位(红色),一维行，二维列
				seatRow: 0, //影院座位行数
				seatCol: 0, //影院座位列数
				seatSize: 0, //座位尺寸
				SelectNum: 0, //选择座位数
				moveX: 0, //水平移动偏移量
				scale: 2, //放大倍数
				minRow: 0, //从第几行开始排座位
				minCol: 0, //从第几列开始排座位
				showTis: true, //显示选座提示
				seatList: [], //接口获取的原始位置
				mArr: [], //排数提示
				optArr: [], //选中的座位数组。
				isWXAPP:false,
			};
		},
		computed: {
			aPrice() {
				return this.SelectNum * 36
			},
			rpxNum() {
				return this.boxWidth / 750
			},
			pxNum() {
				return 750 / this.boxWidth
			},
		},
		onLoad(options) {
			this.syhClassroomId=options.syhClassroomId;
			// this.machine=options.machine;
			console.log("syhClassroomId",this.syhClassroomId);
			//获取宽度
			uni.getSystemInfo({
				success: function(e) {
					this.boxWidth = e.screenWidth
					//#ifdef H5
					this.scaleMin = 0.95
					//#endif
				}
			})
			const userStorage=uni.getStorageSync("login_user_info")
							console.log("直接获取存储id",userStorage)
							console.log("useridStorage",userStorage.syhUserId)
							this.syhUserId=userStorage.syhUserId
			this.$http.get('/classsit/queryByClassroomId?classroomId='+this.syhClassroomId).then(res=>{
				console.log("res",res)
				 if (res.data.success) {
					let perArr = res.data.data.result;
					console.log("perArr",perArr),
					this.seatData=perArr;
					this.initData()
				}
			}).catch(err => {
				console.log(err);
			});	
			
		},
		methods: {
			initData: function() {
				console.log("initData",this.seatData)
				
				let arr = this.seatData
				//假数据说明：syhSitId座位编号，rowNum-行号，columnNum-纵号，ycoord-Y坐标，xcoord-X坐标，Status-状态
				let row = 0
				let col = 0
				let minCol = parseInt(arr[0].xcoord)
				let minRow = parseInt(arr[0].ycoord)

				for (let i of arr) {
					minRow = parseInt(i.ycoord) < minRow ? parseInt(i.ycoord) : minRow
					minCol = parseInt(i.xcoord) < minCol ? parseInt(i.xcoord) : minCol
					row = parseInt(i.ycoord) > row ? parseInt(i.ycoord) : row
					col = parseInt(i.xcoord) > col ? parseInt(i.xcoord) : col
				}
				this.seatList = arr
				this.seatRow = row - minRow + 1
				this.seatCol = col - minCol + 3
				this.minRow = minRow
				this.minCol = minCol - 1
        console.log("minCol:",minCol,"minRow：",minRow)
				this.initSeatArray()
			},
			onShowDatePicker(type){//显示
			    this.type = type;
			    this.showPicker = true;
			    this.value = this[type];
			},
			onSelected(e) {//选择
			    this.showPicker = false;
			    if(e) {
			        this[this.type] = e.value; 
			        //选择的值
			        console.log('value => '+ e.value);
			        //原始的Date对象
			        console.log('date => ' + e.date);
					var dateformate=e.date;
					// dateformate.format('yyyy-MM-dd hh:mm:ss')
					this.endTime=e.date
					this.buySeat()
			    }
			},
			//初始座位数组
			initSeatArray: function() {
				let seatArray = Array(this.seatRow).fill(0).map(() => Array(this.seatCol).fill({
					syhSitStatus: -1,
					syhSitId: '',
					rowNum: '',
					columnNum: ''
				}));
				this.seatArray = seatArray
				this.seatSize = this.boxWidth > 0 ?
					parseInt(parseInt(this.boxWidth, 10) / (this.seatCol + 1), 15) :
					parseInt(parseInt(414, 10) / (this.seatCol + 1), 10)
				this.initNonSeatPlace();
			},
			//初始化是座位的地方
			initNonSeatPlace: function() {
				let seat = this.seatList.slice()
        console.log("初始化是座位的地方",seat)
				let arr = this.seatArray.slice()
        // let num=0;
				for (let num in seat) {
					let syhSitStatus = 2 //-1为非座位，0为未购座位，1为已选座位(绿色),2为已购座位(红色)
					if (seat[num].syhSitStatus === 0) {
						syhSitStatus = 0
					} else if (seat[num].syhSitStatus === -1) {
						syhSitStatus = -1
					}
					// console.log("num:",num)
					// console.log("arr[][]",parseInt(seat[num].ycoord) - this.minRow,parseInt(seat[num].xcoord) - this.minCol)
          if (num%10==9){
            console.log("错位")
            console.log("错位arr[][]",parseInt(seat[num].ycoord) - this.minRow-1,parseInt(seat[num].xcoord) - this.minCol)
            arr[parseInt(seat[num].ycoord) - this.minRow-1][parseInt(seat[num].xcoord) - this.minCol] = {
              syhSitStatus: syhSitStatus,
              syhSitId: seat[num].syhSitId,
              rowNum: seat[num].rowNum,
              columnNum: seat[num].columnNum
            }
          }else {
            arr[parseInt(seat[num].ycoord) - this.minRow][parseInt(seat[num].xcoord) - this.minCol] = {
              syhSitStatus: syhSitStatus,
              syhSitId: seat[num].syhSitId,
              rowNum: seat[num].rowNum,
              columnNum: seat[num].columnNum
            }
          }

					// console.log("arr:",arr[parseInt(seat[num].ycoord) - this.minRow][parseInt(seat[num].xcoord) - this.minCol])
				}
				console.log(arr)
				this.seatArray = arr.slice()
				let mArr = []
				for (let i in arr) {
					let m = ''
					for (let n of arr[i]) {
						if (n.syhSitId) {
							m = n.rowNum
						}
					}
					if (m) {
						mArr.push(m)
					} else {
						mArr.push('')
					}
				}
				this.mArr = mArr
			},
			//放大缩小事件
			onScale: function(e) {
				this.showTis = false
				// this.moveX=-e.detail.x
				let w = this.boxWidth * 0.5
				let s = 1 - e.detail.scale
				this.moveX = w * s
				this.scale = e.detail.scale
				if (s > 0 || s === 0) {
					this.showTis = true
				}
			},
			//移动事件
			onMove: function(e) {
				this.showTis = false
				this.moveX = e.detail.x
			},
			//重置座位
			resetSeat: function() {
				this.SelectNum = 0
				this.optArr = []
				//将所有已选座位的值变为0
				let oldArray = this.seatArray.slice();
				for (let i = 0; i < this.seatRow; i++) {
					for (let j = 0; j < this.seatCol; j++) {
						if (oldArray[i][j].syhSitStatus === 1) {
							oldArray[i][j].syhSitStatus = 0
						}
					}
				}
				this.seatArray = oldArray;
			},
			//选定且购买座位
			buySeat: function() {
				if (this.SelectNum === 0) {
					return
				}
				let oldArray = [];
				for (let i = 0; i < this.seatRow; i++) {
					for (let j = 0; j < this.seatCol; j++) {
						if (this.seatArray[i][j].syhSitStatus === 1) {
							oldArray.push(this.seatArray[i][j].syhSitId)
							
						}
					}
				}
				let sitIdList=oldArray;
				this.Reserve.syhUserId=this.syhUserId;
				this.Reserve.syhSitIds=sitIdList;
				this.Reserve.syhReserveEndTime=this.endTime;
				
				this.$http.post('/reserve/addReserve',this.Reserve).then(res=>{
					console.log("res",res)
					 if (res.data.success) {
						let perArr = res.data.data.result;
						this.$tip.success('预定成功成功!')
						 // this.$Router.replaceAll({name:'index'})
						uni.reLaunch({
							url: '/pages/reserve/reserveList'
						 });
						
						
					}
					this.$tip.alert(res.data.message);
				}).catch(err => {
					console.log(err);
				});	
				
				console.log("oldArray.push(this.seatArray[i][j].syhSitId)",oldArray)
			},
			//处理座位选择逻辑
			handleChooseSeat: function(row, col) {
				let seatValue = this.seatArray[row][col].syhSitStatus;
				let newArray = this.seatArray;
				//如果是已购座位，直接返回
				if (seatValue === 2 || seatValue === -1) return
				//如果是已选座位点击后变未选
				if (seatValue === 1) {
					newArray[row][col].syhSitStatus = 0
					this.SelectNum--
					this.getOptArr(newArray[row][col], 0)
				} else if (seatValue === 0) {
					newArray[row][col].syhSitStatus = 1
					this.SelectNum++
					this.getOptArr(newArray[row][col], 1)
					
				}
				console.log("处理座位1:",newArray)
				//必须整体更新二维数组，Vue无法检测到数组某一项更新,必须slice复制一个数组才行
				this.seatArray = newArray.slice();
				console.log("处理座位2:",newArray)
			
			},
			//处理已选座位数组
			getOptArr: function(item, syhSitStatus) {
				let optArr = this.optArr
				console.log("已选择数组：",this.optArr)
				console.log("输入参数：",item,syhSitStatus)
				this.optArr = item
				if (syhSitStatus === 1) {
					optArr.push(item)
					this.optArr=item
					console.log("赋值参数：",this.optArr)
				} 
				else if (syhSitStatus === 0) {
					let arr = []
					optArr.forEach(v => {
						if (v.syhSitId !== item.syhSitId) {
							arr.push(v)
						}
					})
					optArr = arr
				}
				console.log("optArr.slice()",optArr.slice())
				this.optArr = optArr.slice()
			},
			//推荐选座,参数是推荐座位数目，
			smartChoose: function(num) {
				console.log('num===', num)
				// 先重置
				this.resetSeat()
				//找到影院座位水平垂直中间位置的后一排
				let rowStart = parseInt((this.seatRow - 1) / 2, 10) + 1;
				//先从中间排往后排搜索
				let backResult = this.searchSeatByDirection(rowStart, this.seatRow - 1, num);
				if (backResult.length > 0) {
					this.chooseSeat(backResult);
					this.SelectNum += num
					return
				}
				//再从中间排往前排搜索
				let forwardResult = this.searchSeatByDirection(rowStart - 1, 0, num);
				if (forwardResult.length > 0) {
					this.chooseSeat(forwardResult);
					this.SelectNum += num
					return
				}
				//提示用户无合法位置可选
				alert('无合法位置可选!')
			
			},
			
			//搜索函数,参数:fromRow起始行，toRow终止行,num推荐座位数
			searchSeatByDirection: function(fromRow, toRow, num) {
				/*
				 * 推荐座位规则
				 * (1)初始状态从座位行数的一半处的后一排的中间开始向左右分别搜索，取离中间最近的，如果满足条件，
				 *    记录下该结果离座位中轴线的距离，后排搜索完成后取距离最小的那个结果座位最终结果，优先向后排进行搜索，
				 *    后排都没有才往前排搜，前排逻辑同上
				 *
				 * (2)只考虑并排且连续的座位，不能不在一排或者一排中间有分隔
				 *
				 * */

				/*
				 * 保存当前方向搜索结果的数组,元素是对象,result是结果数组，offset代表与中轴线的偏移距离
				 * {
				 *   result:Array([x,y])
				 *   offset:Number
				 * }
				 *
				 */
				let currentDirectionSearchResult = [];

				let largeRow = fromRow > toRow ? fromRow : toRow,
					smallRow = fromRow > toRow ? toRow : fromRow;

				for (let i = smallRow; i <= largeRow; i++) {
					//每一排的搜索,找出该排里中轴线最近的一组座位
					let tempRowResult = [],
						minDistanceToMidLine = Infinity;
					for (let j = 0; j <= this.seatCol - num; j++) {
						//如果有合法位置
						if (this.checkRowSeatContinusAndEmpty(i, j, j + num - 1)) {
							//计算该组位置距离中轴线的距离:该组位置的中间位置到中轴线的距离
							let resultMidPos = parseInt((j + num / 2), 10);
							let distance = Math.abs(parseInt(this.seatCol / 2) - resultMidPos);
							//如果距离较短则更新
							if (distance < minDistanceToMidLine) {
								minDistanceToMidLine = distance;
								//该行的最终结果
								tempRowResult = this.generateRowResult(i, j, j + num - 1)
							}
						}
					}
					//保存该行的最终结果
					currentDirectionSearchResult.push({
						result: tempRowResult,
						offset: minDistanceToMidLine
					})
				}

				//处理后排的搜索结果:找到距离中轴线最短的一个
				//注意这里的逻辑需要区分前后排，对于后排是从前往后，前排则是从后往前找
				let isBackDir = fromRow < toRow;
				let finalReuslt = [],
					minDistanceToMid = Infinity;
				if (isBackDir) {
					//后排情况,从前往后
					currentDirectionSearchResult.forEach((item) => {
						if (item.offset < minDistanceToMid) {
							finalReuslt = item.result;
							minDistanceToMid = item.offset;
						}
					});
				} else {
					//前排情况，从后往前找
					currentDirectionSearchResult.reverse().forEach((item) => {
						if (item.offset < minDistanceToMid) {
							finalReuslt = item.result;
							minDistanceToMid = item.offset;
						}
					})
				}

				//直接返回结果
				return finalReuslt
			},

			/*辅助函数，判断每一行座位从i列到j列是否全部空余且连续
			 *
			 */
			checkRowSeatContinusAndEmpty: function(rowNum, startPos, endPos) {
				let isValid = true;
				for (let i = startPos; i <= endPos; i++) {
					if (this.seatArray[rowNum][i].syhSitStatus !== 0) {
						isValid = false;
						break;
					}
				}
				return isValid
			},
			//辅助函数：返回每一行的某个合理位置的座位数组
			generateRowResult: function(row, startPos, endPos) {
				let result = [];
				for (let i = startPos; i <= endPos; i++) {
					result.push([row, i])
				}
				return result
			},
			//辅助函数:智能推荐的选座操作
			chooseSeat: function(result) {
				let opt = this.optArr
				let oldArray = this.seatArray.slice();
				for (let i = 0; i < result.length; i++) {
					//选定座位
					oldArray[result[i][0]][result[i][1]].syhSitStatus = 1
					this.optArr.push(oldArray[result[i][0]][result[i][1]])
				}
				this.seatArray = oldArray;
			},
		}
	}
</script>

<style lang="scss" scoped>
	.p-all-10{
		padding: 10rpx;
	}
	.ml-10 {
		margin-left: 10rpx;
	}

	.m-0-10 {
		margin: 0 10rpx;
	}

	.bg-unbtn {
		background-color: #f9abb3;
	}

	.bg-red-1 {
		background-color: #F45664;
	}

	.br-10 {
		border-radius: 10rpx;
	}

	.ml-20 {
		margin-left: 20rpx;
	}

	.mb-20 {
		margin-bottom: 20rpx;
	}

	.p-all-32 {
		padding: 32rpx;
	}

	.fd-cr {
		flex-direction: column-reverse;
		/* 主轴方向从下到上,默认从左到右 */
	}

	.bottom-bar {
		bottom: var(--window-bottom);
	}

	.color-fff {
		color: #fff
	}

	.br-15 {
		border-radius: 15rpx;
	}

	.over-h {
		overflow: hidden;
	}

	.dp-ib {
		display: inline-block;
	}

	.mt-20 {
		margin-top: 20rpx;
	}

	.pa-v-2 {
		/* 定位垂直对齐 */
		left: 50%;
		transform: translateX(-50%)
	}

	.b-d-1 {
		border: 1px dashed #e5e5e5;
	}

	.w-100 {
		width: 100%;
	}

	.h-100 {
		height: 100%;
	}

	.bg-f1 {
		background-color: #f1f1f1;
	}

	.h-100vh {
		height: 100vh;
	}

	.pt-f {
		position: fixed;
	}

	.left-0 {
		left: 0;
	}

	.p-0-32 {
		padding: 0 32rpx;
	}

	.pt-20 {
		padding-top: 20rpx;
	}

	.bg-white {
		background-color: #fff;
	}

	.z1000 {
		z-index: 1000;
	}

	.fz-34 {
		font-size: 34rpx;
	}

	.fw-b {
		font-weight: bold;
	}

	.mt-10 {
		margin-top: 10rpx;
	}

	.fz-28 {
		font-size: 28rpx;
	}

	.color-666 {
		color: #666666
	}

	.dp-f {
		display: flex;
	}

	.jc-c {
		justify-content: center;
	}

	.ai-c {
		align-items: center;
	}

	.fz-22 {
		font-size: 22rpx;
	}

	.color-333 {
		color: #333333
	}

	.m-0-a {
		margin: 0 auto;
	}

	.mt-48 {
		margin-top: 48rpx;
	}

	.fz-20 {
		font-size: 20rpx;
	}

	.color-999 {
		color: #999999
	}

	.b-1 {
		border: 1px solid #CCCCCC;
	}

	.br-5 {
		border-radius: 5rpx;
	}

	.Stage {
		background-color: #dddddd;
		width: 380rpx;
		height: 34rpx;
		transform: perspective(34rpx) rotateX(-10deg);
		margin: 0 auto;
	}

	.bg-line {
		background-color: rgba(0, 0, 0, 0.3);
	}

	.sel-seat {
		background: url('/static/selected.png') center center no-repeat;
		background-size: 100% 100%;
	}
	
	.unsel-seat {
		background: url('/static/unselected.png') center center no-repeat;
		background-size: 100% 100%;
	}
	
	.bought-seat {
		background: url('/static/bought.png') center center no-repeat;
		background-size: 100% 100%;
	}
</style>
